Edit the list, and input the zoom levels, you desire. If increase the count of zoom levels, originally at 10, you have to also edit one more file, or compilation will fail with the error that the ZoomMenuItems number is too big. Therefore, just if you've increased the number of zoom levels, edit <strong>xpdf-3.02/xpdf/XPDFViewer.h</strong> and change<br />
<em>#define nZoomMenuItems 10</em><br />
to the number necessary.</p>